weight = float(input("请输入快递重量(kg)："))
print('编号01：华东地区 编号02：华南地区 编号03：华北地区')
place = input("请输入地区编号：")
if weight <= 2:
    if place == '01':
        print('快递费为13元')
    elif place == '02':
        print('快递费为12元')
    elif place == '03':
        print('快递费为14元')
else:
    ext_weight = weight - 2
    if place == '01':
        money = ext_weight * 3 + 13
        print('快递费为%.1f元' % money)
    elif place == '02':
        money = ext_weight * 2 + 12
        print('快递费为%.1f元' % money)
    elif place == '03':
        money = ext_weight * 4 + 14
        print('快递费为%.1f元' % money)